At present, scientists can determine the arrangement of relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease resistant animal breeds.
Which of the statement(s) given above is/are correct?

Solution (By Examveda Team)

Knowing the arrangement of genes on a chromosome is like having a map of our DNA!
This helps us understand many things.
Option 1: Knowing the gene arrangement helps in understanding the pedigree (family history) of animals, like livestock. This is because genes are passed down from parents to offspring, so their arrangement helps trace lineage.
Option 2: While gene arrangement is important for understanding diseases, it doesn't explain all human diseases. Many diseases are complex and involve multiple genes and environmental factors.
Option 3: By knowing where specific genes are located, scientists can identify genes related to disease resistance. This allows them to develop breeds of animals that are less susceptible to certain diseases.
Therefore, options 1 and 3 are correct because understanding gene arrangement helps with animal breeding and disease resistance.
The correct answer is C (1 and 3).